**Recent official forecasts and model consensus position 20–22°C as the leading outcomes for Buenos Aires’ highest temperature on August 30, 2026, aligning closely with the market’s implied probabilities (21°C at 38.5%, 20°C at 23.5%, 22°C at 21.5%).** Late August marks the end of Southern Hemisphere winter in the region, with climatological daytime maxima typically 15–18°C under the influence of the subtropical high-pressure system. Current conditions feature stable northeasterly flow and limited cloud cover, which models such as GFS and ECMWF indicate will allow modest warming. The Servicio Meteorológico Nacional (SMN) and multiple global sources project afternoon highs of 17–21°C on Sunday, with minimal precipitation risk and light-to-moderate winds that support the upper end of that range without strong cold-air advection. Key variables affecting the exact peak include the timing and extent of any afternoon cloud increase (which could cap temperatures near 19–20°C) versus clearer skies that permit readings near 22°C. Ensemble spreads remain relatively narrow given the short lead time, but small differences in boundary-layer moisture or wind direction introduce the observed market dispersion across the 20–22°C outcomes. Updated model runs and SMN briefings in the final hours before the daily maximum will be the primary catalysts for any shifts in trader positioning.